ISP example program.
Dependencies: SLCD mbed USBLocalFileSystem
FRDM-KL46Z | LPC810 | |
---|---|---|
UART RXD | PTE23 | p2(P0_4) |
UART TXD | PTE22 | p8(P0_0) |
nRESET | D6 | p1(P0_5) |
nISP | D8 | p5(P0_1) |
GND | GND | p7 |
3.3V | P3V3 | p6 |
Copy binary image to the disk called LPC81ISP.
Push sw1 or sw3, start write to LPC810 flash.
Diff: USBMSD2/USB_MSD.cpp
- Revision:
- 1:cccfc461c61f
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/USBMSD2/USB_MSD.cpp Sun Feb 16 12:56:12 2014 +0000 @@ -0,0 +1,550 @@ +/* Copyright (c) 2010-2011 mbed.org, MIT License +* +* Permission is hereby granted, free of charge, to any person obtaining a copy of this software +* and associated documentation files (the "Software"), to deal in the Software without +* restriction, including without limitation the rights to use, copy, modify, merge, publish, +* distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the +* Software is furnished to do so, subject to the following conditions: +* +* The above copyright notice and this permission notice shall be included in all copies or +* substantial portions of the Software. +* +* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING +* BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND +* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, +* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#include "USB_MSD.h" + +#if (DEBUG2 > 3) +#define MSD_DBG(...) do{fprintf(stderr,"[%s@%d] ",__PRETTY_FUNCTION__,__LINE__);fprintf(stderr,__VA_ARGS__);fprintf(stderr,"\r\n");} while(0); +#else +#define MSD_DBG(...) while(0) +#endif + +#define DISK_OK 0x00 +#define NO_INIT 0x01 +#define NO_DISK 0x02 +#define WRITE_PROTECT 0x04 + +#define CBW_Signature 0x43425355 +#define CSW_Signature 0x53425355 + +// SCSI Commands +#define TEST_UNIT_READY 0x00 +#define REQUEST_SENSE 0x03 +#define FORMAT_UNIT 0x04 +#define INQUIRY 0x12 +#define MODE_SELECT6 0x15 +#define MODE_SENSE6 0x1A +#define START_STOP_UNIT 0x1B +#define MEDIA_REMOVAL 0x1E +#define READ_FORMAT_CAPACITIES 0x23 +#define READ_CAPACITY 0x25 +#define READ10 0x28 +#define WRITE10 0x2A +#define VERIFY10 0x2F +#define READ12 0xA8 +#define WRITE12 0xAA +#define MODE_SELECT10 0x55 +#define MODE_SENSE10 0x5A + +// MSC class specific requests +#define MSC_REQUEST_RESET 0xFF +#define MSC_REQUEST_GET_MAX_LUN 0xFE + +#define DEFAULT_CONFIGURATION (1) + +// max packet size +#define MAX_PACKET MAX_PACKET_SIZE_EPBULK + +// CSW Status +enum Status { + CSW_PASSED, + CSW_FAILED, + CSW_ERROR, +}; + +USB_MSD::USB_MSD(USBDevice* device, DiskInterface* disk) : _device(device),_disk(disk) +{ + MSD_DBG("device=%p", device); + + stage = READ_CBW; + memset((void *)&cbw, 0, sizeof(CBW)); + memset((void *)&csw, 0, sizeof(CSW)); + page = NULL; +} + +bool USB_MSD::connect() { + + //disk initialization + if (_disk->disk_status() & NO_INIT) { + if (_disk->disk_initialize()) { + return false; + } + } + + // get number of blocks + BlockCount = _disk->disk_sectors(); + + // get memory size + MemorySize = _disk->disk_size(); + + if (BlockCount > 0) { + BlockSize = MemorySize / BlockCount; + if (BlockSize != 0) { + free(page); + page = (uint8_t *)malloc(BlockSize * sizeof(uint8_t)); + if (page == NULL) + return false; + } + } else { + return false; + } + return true; +} + +void USB_MSD::disconnect() { + //De-allocate MSD page size: + free(page); + page = NULL; +} + +void USB_MSD::reset() { + stage = READ_CBW; +} + +bool USB_MSD::Request_callback(CONTROL_TRANSFER* transfer) +{ + static uint8_t msc_maxLUN[1] = {0}; + + if (transfer->setup.bmRequestType.Type == CLASS_TYPE) { + switch (transfer->setup.bRequest) { + case MSC_REQUEST_RESET: + reset(); + return true; + + case MSC_REQUEST_GET_MAX_LUN: + transfer->remaining = 1; + transfer->ptr = msc_maxLUN; + transfer->direction = DEVICE_TO_HOST; + return true; + } + } + return false; +} + +// Called in ISR context called when a data is received +bool USB_MSD::EPBULK_OUT_callback() { + uint32_t size = 0; + uint8_t buf[MAX_PACKET_SIZE_EPBULK]; + _device->readEP(EPBULK_OUT, buf, &size, MAX_PACKET_SIZE_EPBULK); + switch (stage) { + // the device has to decode the CBW received + case READ_CBW: + CBWDecode(buf, size); + break; + + // the device has to receive data from the host + case PROCESS_CBW: + switch (cbw.CB[0]) { + case WRITE10: + case WRITE12: + memoryWrite(buf, size); + break; + case VERIFY10: + memoryVerify(buf, size); + break; + } + break; + + // an error has occured: stall endpoint and send CSW + default: + _device->stallEndpoint(EPBULK_OUT); + csw.Status = CSW_ERROR; + sendCSW(); + break; + } + + //reactivate readings on the OUT bulk endpoint + _device->readStart(EPBULK_OUT, MAX_PACKET_SIZE_EPBULK); + return true; +} + +// Called in ISR context when a data has been transferred +bool USB_MSD::EPBULK_IN_callback() { + switch (stage) { + + // the device has to send data to the host + case PROCESS_CBW: + switch (cbw.CB[0]) { + case READ10: + case READ12: + memoryRead(); + break; + } + break; + + //the device has to send a CSW + case SEND_CSW: + sendCSW(); + break; + + // the host has received the CSW -> we wait a CBW + case WAIT_CSW: + stage = READ_CBW; + break; + + // an error has occured + default: + _device->stallEndpoint(EPBULK_IN); + sendCSW(); + break; + } + return true; +} + +void USB_MSD::memoryWrite (uint8_t * buf, uint16_t size) { + + if ((addr + size) > MemorySize) { + size = MemorySize - addr; + stage = ERROR; + _device->stallEndpoint(EPBULK_OUT); + } + + // we fill an array in RAM of 1 block before writing it in memory + for (int i = 0; i < size; i++) + page[addr%BlockSize + i] = buf[i]; + + // if the array is filled, write it in memory + if (!((addr + size)%BlockSize)) { + if (!(_disk->disk_status() & WRITE_PROTECT)) { + _disk->disk_write(page, addr/BlockSize); + } + } + + addr += size; + length -= size; + csw.DataResidue -= size; + + if ((!length) || (stage != PROCESS_CBW)) { + csw.Status = (stage == ERROR) ? CSW_FAILED : CSW_PASSED; + sendCSW(); + } +} + +void USB_MSD::memoryVerify (uint8_t * buf, uint16_t size) { + uint32_t n; + + if ((addr + size) > MemorySize) { + size = MemorySize - addr; + stage = ERROR; + _device->stallEndpoint(EPBULK_OUT); + } + + // beginning of a new block -> load a whole block in RAM + if (!(addr%BlockSize)) + _disk->disk_read(page, addr/BlockSize); + + // info are in RAM -> no need to re-read memory + for (n = 0; n < size; n++) { + if (page[addr%BlockSize + n] != buf[n]) { + memOK = false; + break; + } + } + + addr += size; + length -= size; + csw.DataResidue -= size; + + if ( !length || (stage != PROCESS_CBW)) { + csw.Status = (memOK && (stage == PROCESS_CBW)) ? CSW_PASSED : CSW_FAILED; + sendCSW(); + } +} + +bool USB_MSD::inquiryRequest (void) { + uint8_t inquiry[] = { 0x00, 0x80, 0x00, 0x01, + 36 - 4, 0x80, 0x00, 0x00, + 'M', 'B', 'E', 'D', '.', 'O', 'R', 'G', + 'M', 'B', 'E', 'D', ' ', 'U', 'S', 'B', ' ', 'D', 'I', 'S', 'K', ' ', ' ', ' ', + '1', '.', '0', ' ', + }; + if (!write(inquiry, sizeof(inquiry))) { + return false; + } + return true; +} + +bool USB_MSD::readFormatCapacity() { + uint8_t capacity[] = { 0x00, 0x00, 0x00, 0x08, + (uint8_t)((BlockCount >> 24) & 0xff), + (uint8_t)((BlockCount >> 16) & 0xff), + (uint8_t)((BlockCount >> 8) & 0xff), + (uint8_t)((BlockCount >> 0) & 0xff), + + 0x02, + (uint8_t)((BlockSize >> 16) & 0xff), + (uint8_t)((BlockSize >> 8) & 0xff), + (uint8_t)((BlockSize >> 0) & 0xff), + }; + if (!write(capacity, sizeof(capacity))) { + return false; + } + return true; +} + +bool USB_MSD::readCapacity (void) { + uint8_t capacity[] = { + (uint8_t)(((BlockCount - 1) >> 24) & 0xff), + (uint8_t)(((BlockCount - 1) >> 16) & 0xff), + (uint8_t)(((BlockCount - 1) >> 8) & 0xff), + (uint8_t)(((BlockCount - 1) >> 0) & 0xff), + + (uint8_t)((BlockSize >> 24) & 0xff), + (uint8_t)((BlockSize >> 16) & 0xff), + (uint8_t)((BlockSize >> 8) & 0xff), + (uint8_t)((BlockSize >> 0) & 0xff), + }; + if (!write(capacity, sizeof(capacity))) { + return false; + } + return true; +} + +bool USB_MSD::write (uint8_t * buf, uint16_t size) { + + if (size >= cbw.DataLength) { + size = cbw.DataLength; + } + stage = SEND_CSW; + + if (!_device->writeNB(EPBULK_IN, buf, size, MAX_PACKET_SIZE_EPBULK)) { + return false; + } + + csw.DataResidue -= size; + csw.Status = CSW_PASSED; + return true; +} + +bool USB_MSD::modeSense6 (void) { + uint8_t sense6[] = { 0x03, 0x00, 0x00, 0x00 }; + if (!write(sense6, sizeof(sense6))) { + return false; + } + return true; +} + +void USB_MSD::sendCSW() { + csw.Signature = CSW_Signature; + _device->writeNB(EPBULK_IN, (uint8_t *)&csw, sizeof(CSW), MAX_PACKET_SIZE_EPBULK); + stage = WAIT_CSW; +} + +bool USB_MSD::requestSense (void) { + uint8_t request_sense[] = { + 0x70, + 0x00, + 0x05, // Sense Key: illegal request + 0x00, + 0x00, + 0x00, + 0x00, + 0x0A, + 0x00, + 0x00, + 0x00, + 0x00, + 0x30, + 0x01, + 0x00, + 0x00, + 0x00, + 0x00, + }; + + if (!write(request_sense, sizeof(request_sense))) { + return false; + } + + return true; +} + +void USB_MSD::fail() { + csw.Status = CSW_FAILED; + sendCSW(); +} + +void USB_MSD::CBWDecode(uint8_t * buf, uint16_t size) { + if (size == sizeof(cbw)) { + memcpy((uint8_t *)&cbw, buf, size); + if (cbw.Signature == CBW_Signature) { + csw.Tag = cbw.Tag; + csw.DataResidue = cbw.DataLength; + if ((cbw.CBLength < 1) || (cbw.CBLength > 16) ) { + fail(); + } else { + switch (cbw.CB[0]) { + case TEST_UNIT_READY: + testUnitReady(); + break; + case REQUEST_SENSE: + requestSense(); + break; + case INQUIRY: + inquiryRequest(); + break; + case MODE_SENSE6: + modeSense6(); + break; + case READ_FORMAT_CAPACITIES: + readFormatCapacity(); + break; + case READ_CAPACITY: + readCapacity(); + break; + case READ10: + case READ12: + if (infoTransfer()) { + if ((cbw.Flags & 0x80)) { + stage = PROCESS_CBW; + memoryRead(); + } else { + _device->stallEndpoint(EPBULK_OUT); + csw.Status = CSW_ERROR; + sendCSW(); + } + } + break; + case WRITE10: + case WRITE12: + if (infoTransfer()) { + if (!(cbw.Flags & 0x80)) { + stage = PROCESS_CBW; + } else { + _device->stallEndpoint(EPBULK_IN); + csw.Status = CSW_ERROR; + sendCSW(); + } + } + break; + case VERIFY10: + if (!(cbw.CB[1] & 0x02)) { + csw.Status = CSW_PASSED; + sendCSW(); + break; + } + if (infoTransfer()) { + if (!(cbw.Flags & 0x80)) { + stage = PROCESS_CBW; + memOK = true; + } else { + _device->stallEndpoint(EPBULK_IN); + csw.Status = CSW_ERROR; + sendCSW(); + } + } + break; + case MEDIA_REMOVAL: + csw.Status = CSW_PASSED; + sendCSW(); + break; + default: + fail(); + break; + } + } + } + } +} + +void USB_MSD::testUnitReady (void) { + + if (cbw.DataLength != 0) { + if ((cbw.Flags & 0x80) != 0) { + _device->stallEndpoint(EPBULK_IN); + } else { + _device->stallEndpoint(EPBULK_OUT); + } + } + + csw.Status = CSW_PASSED; + sendCSW(); +} + +void USB_MSD::memoryRead (void) { + uint32_t n; + + n = (length > MAX_PACKET) ? MAX_PACKET : length; + + if ((addr + n) > MemorySize) { + n = MemorySize - addr; + stage = ERROR; + } + + // we read an entire block + if (!(addr%BlockSize)) + _disk->disk_read(page, addr/BlockSize); + + // write data which are in RAM + _device->writeNB(EPBULK_IN, &page[addr%BlockSize], n, MAX_PACKET_SIZE_EPBULK); + + addr += n; + length -= n; + + csw.DataResidue -= n; + + if ( !length || (stage != PROCESS_CBW)) { + csw.Status = (stage == PROCESS_CBW) ? CSW_PASSED : CSW_FAILED; + stage = (stage == PROCESS_CBW) ? SEND_CSW : stage; + } +} + +bool USB_MSD::infoTransfer (void) { + uint32_t n; + + // Logical Block Address of First Block + n = (cbw.CB[2] << 24) | (cbw.CB[3] << 16) | (cbw.CB[4] << 8) | (cbw.CB[5] << 0); + + addr = n * BlockSize; + + // Number of Blocks to transfer + switch (cbw.CB[0]) { + case READ10: + case WRITE10: + case VERIFY10: + n = (cbw.CB[7] << 8) | (cbw.CB[8] << 0); + break; + + case READ12: + case WRITE12: + n = (cbw.CB[6] << 24) | (cbw.CB[7] << 16) | (cbw.CB[8] << 8) | (cbw.CB[9] << 0); + break; + } + + length = n * BlockSize; + + if (!cbw.DataLength) { // host requests no data + csw.Status = CSW_FAILED; + sendCSW(); + return false; + } + + if (cbw.DataLength != length) { + if ((cbw.Flags & 0x80) != 0) { + _device->stallEndpoint(EPBULK_IN); + } else { + _device->stallEndpoint(EPBULK_OUT); + } + + csw.Status = CSW_FAILED; + sendCSW(); + return false; + } + + return true; +}